<html>
    <head>
        <title>笔试题</title>
    </head>
    <body>
        
        <script>
            /*
                3.下面哪个描述不正确(   )

                A.NaN!=null       B.null!=undefined     C. {}!=false      D.null!=false

                 正确答案：C
                 解析：
                    
            */

           
            console.log("NaN!=null:"+(NaN!=null));
            console.log("null!=undefined:"+(null!=undefined));
            console.log("{}!=false:"+({}!=false ));
            console.log("null!=false:"+(null!=false));

        </script>
    </body>
</html>